Pentax AF-540FGZ II Dedicated Shoe Mount Zoom Flash, Guide Number 177 at ISO 100
The new AF540FGZ II is designed with the active photographer in mind and feature significant upgrades like the PENTAX original weather sealing (AW) technology and a new constant light source, making it as robust and versatile as the PENTAX weather-sealed DSLRs and lenses that it will accompany.
With a guide number of 178 at ISO 100/ft (54 at ISO 100/m) the Pentax AF540FGZ II flashe provides a variety of advanced flash applications, including P-TTL auto flash, high-speed synchronization and wireless P-TTL auto flash. Additionally The Pentax AF540FGZ II features a LED light to act as a constant light source for video and long exposure photography, while quick recycle times of five seconds on the AF540FGZ II ensure that a shot is never missed.
|Guide Number||119' (ISO 100 at 85mm)
69' (ISO 100 at 24mm)
|Bounce Capability||Vertical bounce possible, click stops provided, lock provided at 0°
Rightward: 0°, 30°, 60°, 90°, 120°, 150°, 180°
Leftward: 0°, 30°, 60°, 90°, 135°
Upward: 0°, 30°, 45°, 60°, 75°, 90°
Downward: 0°, -10°
|Auto Settings||Wireless Flash (Control system) Optical pulse transmission (Wireless position) Master (M), Control (C), Slave (S) (Channels) 1 to 4 Compatible modes: P-TTL, manual (M) Effective range: Approx. 4 m (When set to SL1, According to our testing conditions.)|
|Angle of Coverage||Auto zoom enabled with autofocus compatible camera and lens combination.|
|Flash Duration||Flash duration (1/2 peak each) (M1/1) flash: Approx. 1/1200 sec. (P-TTL) Fastestduration time: Approx. 1/20000 sec.|
|Power Source||Four AA batteries, (Alkaline (LR6), Nickel-Metal Hydride (Ni-MH), or Lithium (FR6))|
|Dimensions (W x H x D)||68 mm (W) × 111 mm (H) × 106 mm (T) (2.6" × 4.3" × 4.1")|
|Weight||Approx. 290 g (10.2 oz.) without batteries|